send.one.com 587 TLS isSMTP(); $mail->Host = $host; $mail->SMTPAuth = true; $mail->Username = $username; $mail->Password = $password; $mail->SMTPSecure = 'tls'; $mail->Port = $port; // 1) Auto-Reply an den Kunden $mail->setFrom("info@sbs-renewenergy.com", "SBS‑Renewenergy"); $mail->addAddress($kunde_email); $mail->Subject = $betreff_kunde; $mail->Body = $text_kunde; $mail->send(); // 2) Interne Mail an dich $mail->clearAddresses(); $mail->addAddress("schuster@sbs-renewenergy.com"); $mail->Subject = $betreff_intern; $mail->Body = $text_intern; $mail->send(); echo "OK"; ?>